Tire and rim setup

I just read a copy of Camaro Now summer edition title of article is "Pursuit Of Perfection A homebuilt ZL1 clone that combines flawless good looks with 735 rwhp" found the same article online states was from the the September, 2012 issue of GM High-Tech Performance. Spec on car showed 20x9 replica with Nitto Invo 315/35/20 rear. I own a 2011 Camaro SS running 20x9 +40 offset oem polish alloy rims on all 4 corners with 275/40/20 rubber and a 1 inch drop. Wondering if i can put 315/35/20 on my rear and be ok without any rubbing issues and without using any spacers.